Peripheral jet pump



Jxlily 14, 1931, s. c. wooDY PERIPHERAL JET PUMP Filed NOV. 19, 1929 c/ ATTORNEY Patented July 14, 1931 UNI-rEo-jsTATEs SPENCER C. WOODY, '0F SEAT'TLEWASHINGTON PERIPHERALJET PUMPy n* Application mea November 19, 192e. semi No. 408,195.

m substances by a fluid under pressure in which the device is so constructed that objects as large as the inlet and exhaust pipes may pass through.

Another object of the invention is to pro- 15 vide a suction pump having a chamber surrounding the pump in which an air cushion is formed which maintains a constant pressure through the pump.

Another object of the invention is to provide a suction pump of the character-described which may be used as either an ejector or injector.

A further object of the invention is to provide a suction pump in which the pressure connection may be made at right angles to the axis of the pump.

A still further object of the invention is to provide a suction pump in which the length is reduced to a minimum.

And a still further object of the invention is to provide a suction pump in Vwhich the complet-e pump is contained in two parts and in which the entire pump is of a simple and economical construction.

With these ends in view the invention embodies a housing with pipe connections at the ends and a circular chamber formed on t-he interior thereof, a sleeve extending through the circular chamber, and an inlet onnection in one side of the circular cham- Other features and advantages of the invention will appear from the following description taken in connection with the drawings, wherein:

Figure 1 is a vertical section through the device.

Figure 2' is a sectional plan through the central portion of the device.

o- In the drawings the device is shown as it would be made jwherein'numeral 1 indicates the housing, numeral 2 the jet sleeve, and numeral '3 thev inlet connection. The housing 1 is made with a cylindrical portion as shown having an enlarged cylindrical chamber l at the lower part thereof, a boss 5 having a threaded opening 6 at the4 outer side! of the cylindrical chamber, and a nut 7 at the opposite end. l'

The sleeve 2 extends through the chamber t and the cylindrical portion of the housing to the point`8 asshown in Figure 1. ThisY sleeveextends from a nut 9 which' screws into the, boss 5, with a straight innerf'surface, and the outer surface is inclined outwardfrorn the point` 8 at a slight angle'forming a por-Y tion of'a cone, and it will be observed that a suction pipe 10 may'beithreaded into `the opposite side of the nut'. A discharge pipe 11 is threaded into the opposite end ofthe housingasshown. Y n Y Y Ther inlet connection Slis formed at one sidevof the chamber 4 and is formed with a boss 12 into which a pipe 13 is threaded. This pipe mayV beaconnecte'd to any suitable meansfor supplying a fluid underpressure.

The-chamber et may also be provided with a connection formed by) a' boss Vlt through which it mayzbe'connected by a nipple 15 to a vacuum tank 16 when the ydevice is used asv an injector.` The tank-16 may be removed and' the opening in the'bo'ss 14 closed by 'a plug 17 when the device is used as an ejector,- asfshown in Figure .1'.-

' It will be understood that changes may be'made in the construction without` departing fromthe spirit of the invention. One of which changes may bein the shape, design or arrangement of the housing, another maybe in the proportionate sizeof the surrounding chamber, another may be 1n the location of the inlet connection, and still another may be inthefmeans Afor Vholding the vsleeve .in the centrallpart of the housing. Y

The yconstruction willbefunde'rstood from`v the foregoing' description. Inuse'the device may be provided as vshown and it will be` observed that with steam under'V pressure,'or any fluid `under pressure supplied to thepipe 13' the'Y fluid will pass around the :centra-li part ido ' between the outer surface of the sleeve 2 and,

and compress the air in the chamber 4 around the outer edge, as it will be noted that the pressure of the incoming fluid will be so much greater than that of the air and the outlet passage of such a comparatively small size that the air in the chamber will be backed up and compressed in the outer part thereof or in the space indicated by the numeral-18. This will form an air cushion which will maintain the fluid at a constant pressure so that the jet action will Vbe'niat-erially facili-` tated. The fluid rushing through the device and passing out through the thin space the inner surface of the cylindrical portion ofthe housing 1, will create a suction that will draw a fluid or material through the inlet connection lOvand discharge or eject it through the pipe ll. `The fluid underl pressure around the periphery of the. sleeve and escaping through a thin circular opening at one end forms a j et with alarge throat opening so that it will have considerablel force. and at the same time be vadaptable to discharge4 bulky substances or objects substantially aslarge asthe pipe. In 'order to ob tain this actiojnit is vnecessary to locateth-e pressure connection 13 at the exterior of the chamber 4 and perpendicular to thje axis of the pump. It will be observed that the pipe 10 may be` inserted in practically any type of substance which may be of a liquid or gaseous 'consistency or may evenbe` of a soli-d, such as sand or other similarfreely moving material. It will7 therefore, be observed that as the interior of the device is open to an area equivalent to that of theinlet and discharge pipes, and also as it may be used as either an injector or ejector it may be usedl universally formany purposes.i A, V

Having thus fully described the invention, what I claim as new and desire to secure by Letters Patent, is: t

In a peripheral jet of the. 'character described, two abuttingrrpipe Sections withv a space lbetween their ends, a casing. intol which one of the said sections is screwed,said casing having an enlarged circular interior opening, the large diameter of said openingrbef ing approximately three times the `diameter of the said pipe sections providing space for an air cushion in the outer partrthereof, a plug screwed into the side of the said casing opposite to that in which the section of pipe, is screwed, said plug extendingfthrough the said circular opening inthe said casing .and a considerable distance beyond the adjacent wallrthereof, the o'uters'urface of thev said' plug tapering outward lfrom theend thereof,- and saidI casing having a c`orresponding taperingsui'face over the portion of the plug that extends beyond the Said? adjacent wallE of the opening in the said; casing, the other section of pipe` screwedv into the outer end In testimony whereof he aflixes his signature. i SPENCER C. WOODY. 

